| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] play a central role in | 9 |
|
| 2 | [vb mod] play a central role in | 9 |
|
| 3 | play a central role in [art] | 5 |
|
| 4 | play a central role in [art] | 5 |
|
| 5 | play a central role in the | 5 |
|
| 6 | play a central role in the | 5 |
|
